Bug ID 523451: Benign virtio I/O errors when run on pre 11.5 hosts

Last Modified: Apr 10, 2019

Bug Tracker

Affected Product:  See more info
BIG-IP vCMP(all modules)

Known Affected Versions:
12.0.0, 12.0.0 HF1, 12.0.0 HF2, 12.0.0 HF3, 12.0.0 HF4

Opened: May 14, 2015
Severity: 5-Cosmetic

Symptoms

When running version 12.0.0 on vCMP host versions previous to 11.5.0, the system produces a series of benign errors in /var/run/vcmpd/guestname/qemu.pid similar to the following messages: block I/O error in device 'virtio0': Input/output error (5).

Impact

Cosmetic: a small number of benign virtio0: Input/output errors appear in the guest's logs on the host. These errors are cosmetic and are a known and benign issue related to the version of qemu and how it handles newer linux kernels.

Conditions

Running BIG-IP software version 12.0.0 configured for vCMP on hosts with versions earlier than 11.5.0.

Workaround

None needed. These are cosmetic errors that have no impact on system functionality.

Fix Information

None

Behavior Change